Replace use of VERSION_GREATER_EQUAL (CMake 3.7+) with VERSION_LESS. F…

…ixes xtensor-stack#2478

CMakeLists.txt

@@ -33,7 +33,7 @@ set(xtl_REQUIRED_VERSION 0.7.0)
 if(TARGET xtl)
     set(xtl_VERSION ${XTL_VERSION_MAJOR}.${XTL_VERSION_MINOR}.${XTL_VERSION_PATCH})
     # Note: This is not SEMVER compatible comparison
-    if( NOT ${xtl_VERSION} VERSION_GREATER_EQUAL ${xtl_REQUIRED_VERSION})
+    if(${xtl_VERSION} VERSION_LESS ${xtl_REQUIRED_VERSION})
         message(ERROR "Mismatch xtl versions. Found '${xtl_VERSION}' but requires: '${xtl_REQUIRED_VERSION}'")
     else()
         message(STATUS "Found xtl v${xtl_VERSION}")
@@ -63,7 +63,7 @@ if(XTENSOR_USE_XSIMD)
     if(TARGET xsimd)
         set(xsimd_VERSION ${XSIMD_VERSION_MAJOR}.${XSIMD_VERSION_MINOR}.${XSIMD_VERSION_PATCH})
         # Note: This is not SEMVER compatible comparison
-        if( NOT ${xsimd_VERSION} VERSION_GREATER_EQUAL ${xsimd_REQUIRED_VERSION})
+        if(${xsimd_VERSION} VERSION_LESS ${xsimd_REQUIRED_VERSION})
             message(ERROR "Mismatch xsimd versions. Found '${xsimd_VERSION}' but requires: '${xsimd_REQUIRED_VERSION}'")
         else()
             message(STATUS "Found xsimd v${xsimd_VERSION}")